The invention discloses a bidirectional
magnetic circuit coupling type
magnetic field modulation direct
drive motor for an electric automobile, and relates to the field of
hybrid excitation of
magnetic field modulation type composite motors. The bidirectional
magnetic circuit coupling type
magnetic field modulation direct
drive motor solves the problems that the permanent magnetic field of an existing
permanent magnet motor for an electric automobile is difficult to adjust and insufficient in low-speed and high-torque characteristic. According to the bidirectional
magnetic circuit coupling type magnetic field modulation direct
drive motor, 2n outer
stator teeth are uniformly arranged on the inner circumferential surface of an outer
stator core in the circumferential direction, an outer
stator direct-current exciting winding is wound around each outer stator tooth, the current directions of every two adjacent outer stator direct-current exciting windings are opposite, 2n permanent
magnet grooves are uniformly formed in the outer circumferential surface of the outer stator core in the circumferential direction, a permanent
magnet is arranged in each permanent
magnet groove, magneticisolation bridges are arranged on the two sides, facing groove bottoms and groove openings, of the permanent magnets, the part, corresponding to the bottoms of the permanent magnet grooves, of the outer stator core is served as a magnetic conduction bridge, the magnetizing directions of every two adjacent permanent magnets are opposite, the direction of the magnetic
force lines of the permanent magnets is the tangential direction of the outer stator core, and the direction of the magnetic
force lines of the outer stator direct-current exciting windings is the radial direction of the outer stator core.